text: /*=========================================================================
   *
   *  Copyright Insight Software Consortium
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *         http://www.apache.org/licenses/LICENSE-2.0.txt
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   *=========================================================================*/
  #ifndef itkAttributeOpeningLabelMapFilter_h
  #define itkAttributeOpeningLabelMapFilter_h
  
  #include "itkInPlaceLabelMapFilter.h"
  #include "itkAttributeLabelObject.h"
  
  namespace itk {
  /** \class AttributeOpeningLabelMapFilter
   * \brief remove the objects according to the value of their attribute
   *
   * AttributeOpeningLabelMapFilter removes the objects in a label collection image
   * with an attribute value smaller or greater than a threshold called Lambda.
   * The attribute is provide by an attribute accessor given in template parameter.
   *
   * \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
   *
   * This implementation was taken from the Insight Journal paper:
   * https://hdl.handle.net/1926/584  or
   * http://www.insight-journal.org/browse/publication/176
   *
   * \sa AttributeLabelObject
   * \ingroup ImageEnhancement  MathematicalMorphologyImageFilters
   * \ingroup ITKLabelMap
   */
  template<typename TImage, typename TAttributeAccessor=
      typename Functor::AttributeLabelObjectAccessor< typename TImage::LabelObjectType > >
  class ITK_TEMPLATE_EXPORT AttributeOpeningLabelMapFilter :
      public InPlaceLabelMapFilter<TImage>
  {
  public:
    /** Standard class typedefs. */
    typedef AttributeOpeningLabelMapFilter Self;
    typedef InPlaceLabelMapFilter<TImage>  Superclass;
    typedef SmartPointer<Self>             Pointer;
    typedef SmartPointer<const Self>       ConstPointer;
  
    /** Some convenient typedefs. */
    typedef TImage                              ImageType;
    typedef typename ImageType::Pointer         ImagePointer;
    typedef typename ImageType::ConstPointer    ImageConstPointer;
    typedef typename ImageType::PixelType       PixelType;
    typedef typename ImageType::IndexType       IndexType;
  
    typedef typename Superclass::LabelObjectType LabelObjectType;
  
    typedef TAttributeAccessor                                 AttributeAccessorType;
    typedef typename AttributeAccessorType::AttributeValueType AttributeValueType;
  
    /** ImageDimension constants */
    itkStaticConstMacro(ImageDimension, unsigned int,
                        TImage::ImageDimension);
  
    /** Standard New method. */
    itkNewMacro(Self);
  
    /** Runtime information support. */
    itkTypeMacro(AttributeOpeningLabelMapFilter,
                 InPlaceLabelMapFilter);
  
  #ifdef ITK_USE_CONCEPT_CHECKING
    // Begin concept checking
  /*  itkConceptMacro(InputEqualityComparableCheck,
      (Concept::EqualityComparable<InputImagePixelType>));
    itkConceptMacro(IntConvertibleToInputCheck,
      (Concept::Convertible<int, InputImagePixelType>));
    itkConceptMacro(InputOStreamWritableCheck,
      (Concept::OStreamWritable<InputImagePixelType>));*/
    // End concept checking
  #endif
  
    /**
     * Set/Get the threshold used to keep or remove the objects.
     */
    itkGetConstMacro(Lambda, AttributeValueType);
    itkSetMacro(Lambda, AttributeValueType);
  
    /**
     * Set/Get the ordering of the objects. By default, the objects with
     * an attribute value smaller than Lamba are removed. Turning ReverseOrdering
     * to true make this filter remove the object with an attribute value greater
     * than Lambda instead.
     */
    itkGetConstMacro( ReverseOrdering, bool );
    itkSetMacro( ReverseOrdering, bool );
    itkBooleanMacro( ReverseOrdering );
  
  protected:
    AttributeOpeningLabelMapFilter();
    ~AttributeOpeningLabelMapFilter() ITK_OVERRIDE {};
  
    void GenerateData() ITK_OVERRIDE;
  
    void PrintSelf(std::ostream& os, Indent indent) const ITK_OVERRIDE;
  
  private:
    ITK_DISALLOW_COPY_AND_ASSIGN(AttributeOpeningLabelMapFilter);
  
    AttributeValueType m_Lambda;
    bool               m_ReverseOrdering;
  
  }; // end of class
  
  } // end namespace itk
  
  #ifndef ITK_MANUAL_INSTANTIATION
  #include "itkAttributeOpeningLabelMapFilter.hxx"
  #endif
  
  #endif
  